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MODEL
702CRD
Oil Burner
Instruction Manual
Installer/servicer – Except where specifically stat-
ed otherwise, this manual must be used only by
a qualified service technician. Failure to comply
with this or other requirements in this manual
could result in severe personal injury, death or
substantial property damage.
User – The burner Instruction Manual is intended
only for your service technician. The burner and
heat exchanger must be inspected and started
at least annually by your service technician.
The National Oilheat Research Alliance (NORA)
recommends single pipe oil systems and
high-quality filtration for all fuel types. This should
include at least a 10 micron Spin-on filter. Double
filtration provides even greater assurance clean
fuel will get to the pump. Contaminants in the
tank that enter the fuel supply to the burner can
cause pump sticking/seizing. These contami-
nants may increase in the early stages of tran-
sitioning to modern fuels (Ultra Low Sulfur and
Bio Blends). High quality filtration adds protection
against pump sticking.
Certification
702CRD burners are U.L. listed for the U.S. and Canada,
certified to comply with ANSI/UL 296, for use with #1 or #2
heating oil as well as bio blends not exceeding B20 (U.S.
Only) (per standard ASTM D396).
Burner labels list compliance, when required, with special
local, state or provincial approvals.
Install this burner in accordance with all local
codes and authorities having jurisdiction. Regu-
lations of these authorities take precedence over
the general instructions provided in this manual.
United States installations
Burner/appliance installations in the United States must
comply with the latest editions of NFPA 31 (Standard for
the Installation of Oil-Burning Equipment), ANSI/NFPA 70
(National Electrical Code), and all applicable local codes.
Canadian installations
Burner/appliance installations in Canada must comply with
the latest editions of CSA B139 (Installation Code for Oil
Burning Equipment), CSA standard C22, Part 1 (Canadian
Electrical Code), and all applicable local codes.
Firing Range .............................................................. 6.00-13.00 GPH
Fuel Specification ................................................. No. 1 or No.2 Fuel Oil
Including Bio Blends not exceeding B20 (U.S ONLY)
Electrical: ....................Motor: 1/2 hp, 3450 rpm, 115/208-230V, 60 Hz
Control: .............................................. Carlin Pro-X 70200, 120V, 60Hz
Ignitor: .................... Carlin Pro-X 45000 Solid State Ignitor, 19,000 volts
Blower Wheel Dia. x Width .................................................. 6
2-stage, 2-step fuel unit .........Low Fire: 100-150 psi / High Fire: 300 psi
Oil Valve Volts ................................................................... 120 V, 60 Hz
126 Bailey Road • North Haven, CT 06473
Phone 203-680-9401 • Fax 203-764-1714
T
800-989-2275 • carlincombustion.com
ech support
© Copyright 2023 — Carlin Combustion Technology
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Summary of Contents for Carlin 702CRD
- Page 1 Bio Blends). High quality filtration adds protection against pump sticking. Certification 702CRD burners are U.L. listed for the U.S. and Canada, certified to comply with ANSI/UL 296, for use with #1 or #2 heating oil as well as bio blends not exceeding B20 (U.S.
- Page 2 4. Using the Carlin OEM guide (burner setup tables) for listed appliances, select and install the appropriate nozzle on the nozzle line assembly using two wrench- es.
-
Page 3: Flange Dimensions
Flange Dimensions Installing the Burner: Adjustable Flange Mounted Standard adjustable flange (universal flange) Figure 4a See flange dimension and measurements in Figures 4a and 4b, this page. 1. Measure, in the burner opening, the distance from the inside of the combustion chamber to the outside of the mounting plate to find the insertion length of air tube needed. - Page 4 Firing Boilers with Firing Boilers without Combustion Chambers Refractory Chambers The 702CRD burner operates with superior efficiency Depending upon the geometry of the combustion and cleanliness in properly designed refractory-type space, some units perform better than others without combustion chambers (Figure 6a). Very wide tolerance refractory (Figures 7a and 7b).
- Page 5 Fuel Unit and Oil Lines TABLE 4 TWO-PIPE SYSTEMS The 702CRD burner is provided with a two-stage dual pressure fuel unit. Low-fire operating pressure is Lift Length of Tubing (Feet) factory set at 100 PSI and can be adjusted by turning the (Feet) 3/8"...
-
Page 6: Burner Operation
NOZZLE SPECIFICATIONS devices, controls, electrical wiring and equipment be done in accordance with • Always use the Carlin OEM Burner Setup Tables for national and/or local regulations of the nozzle specifications when the appliance is listed, authorities having jurisdiction over such Many nozzles are available through your wholesaler or installation. -
Page 7: Burner Adjustments
3. Burner Adjustments LIGHT-OFF AND ADJUSTMENT Dimension “A” Figure 9 It is recommended, once preliminary high and low for settings are made, to drive the burner to high fire. Retention ring Dimension A Set high fire air to achieve 11½ -12½% CO with a zero smoke. - Page 8 HIGH FIRE AIR ADJUSTMENT TABLE 5 NOZZLE DATA AND PRELIMINARY Only adjust the combustion head while in COMBUSTION HEAD SETTINGS high fire Heat Siemens The high fire air adjustment is made by moving the firing High High Nozzle FIre Setting Fire “X”...
- Page 9 NOTE: Before setting your cams, make sure the disengaging pin is pushed in (only if using wrench). Color Position Settings The 702CRD burner with the SQN71 damper motor will come from the High-Fire factory set with the preliminary settings shown in Table 7 on this page. Blue Low-Fire...
- Page 10 Replacement Parts – 702CRD...
- Page 12 3. Contact your oil dealer or service technician any fuel other than #1 or #2 heating oil and the fire department (if needed). or bio blends not exceeding B20 (U.S. Only) (ASTM D396). © Copyright 2023 – Carlin Combustion Technology MN71761 010423...
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